[TowerTalk] Th6dxx swr

[Lee Buller]

Bob,

I set the ones I have used for mid-band.  That gave me the best band coverage on 20-15-10.  Make sure you waterproof the traps.  The balun should be good.  

That low to the ground you will not get a good reading.  As the other feller said....stand it up on the reflector vertically.  Watch out for overhead wires.

Lee - K0WA


In our day and age it seems that Common Sense is in short supply.  If you don't have any Common Sense - get some Common Sense and use it.  If you can't find any Common Sense, ask for help from somebody who has some Common Sense.  Is Common Sense divine?

--- On Tue, 10/14/08, Bob Ortasic <rortasic at neo.rr.com> wrote:
From: Bob Ortasic <rortasic at neo.rr.com>
Subject: [TowerTalk] Th6dxx swr
To: towertalk at contesting.com
Date: Tuesday, October 14, 2008, 7:20 PM

>From KN8M..

 

Just finished putting together a th6dxx. I have it on a mast approx 6foot off
the ground for testing..

 

I cut all three bands for the low end (CW). I don't spend a lot of time on
SSB and figured the rig tuner will take care of SSB contacts..

 

Using an MFJ SWR Analyzer I find that the resonant freq on all 3 bands are
below the bottom edge of the band. I haven't graphed it yet.. But on 20 mtrs
am 2:1 at about 14030?? Anyone have any thoughts..

 

I am running the Analyzer through approx 50 foot of coax into the antenna.

 

I am using a W2AU Balun. Is there a certain pig tail length from Balun to feed
point?? Also, is there a certain pigtail length from beta matching to feed
point??

 

Help appreciated,

 

Bob KN8M

 
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